At Keeper Security in Chicago, they charge customers $10 a year to use military-grade encryption that safeguards passwords to personal data.

How necessary is this service in today's world?

"There's words like important and necessary, but we usually use the word essential," said CEO Darren Guccione.

The idea of using passwords was hatched 50 years ago in a lab at MIT. But while everything about computing has changed since, we're still using our birthdays, telephone numbers or a spouse's middle name to access the Internet.

Easy-to remember combinations are easy to steal.

Some people choose very obvious passwords that are easy to steal.

CBS News

According to password manager Splash Data, the most common passwords of last year were beyond simple. "123456" topped the list, followed by "password."